Photofragmentation of metal fullerides C60Mx (M=Sm, Pt) and composite materials composed of M2O3 (M=La, Y) and ozonized Ceo precipitate (designated as C60+O3 below) has been studied by excimer laser ablation-TOF mass spectrometry. In the laser ablation of metal-fullerene clusters C60Mx, metallofullerenes of the type MCn (n in the fullerene region) have been observed in both ionic modes. [C59M]+ and [C59M]- are the most prominent metallofullerenes depicted in the positive and negative mass spectr
